1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your new YWGMGJND Tail Lights. Please read this manual thoroughly before installation and use to ensure proper function and safety. Retain this manual for future reference.
2. Product Overview
The YWGMGJND Tail Lights are designed as a direct replacement for specific Audi A5, S5, and RS5 models. Constructed from durable ABS plastic, these lights offer excellent water, shock, and heat resistance. They are engineered to enhance vehicle visibility and safety through their integrated driving, braking, warning, and stopping functions.

Figure 2.1: A pair of YWGMGJND LED tail lights, showcasing their modern design and integrated light bars.

Figure 2.2: Detailed view of the tail light's internal components, highlighting the LED elements for various functions.
3. Specifications
| Feature | Detail |
|---|---|
| Material | ABS Plastic |
| Placement on Vehicle | Left, Right (Rear) |
| Functions | Driving Light, Brake Light, Turn Signal, Reversing Light |
| Product Dimensions (each) | Approximately 0.39 x 0.39 x 0.39 inches (L x W x H) |
| Item Weight (pair) | Approximately 2.2 pounds |
| Manufacturer | YWGMGJND |
4. Compatibility
These tail lights are compatible with the following Audi models and years:
- Audi A5: 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
- Audi S5: 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
- Audi RS5: 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
It is crucial to verify the compatibility with your specific vehicle model and year before proceeding with installation. Ensure the existing wiring harness and connectors match the new tail light assembly.
5. Installation Instructions (Setup)
Installation of these tail lights is designed for direct replacement. While the process is generally straightforward, professional installation is recommended to ensure correct wiring and secure fitting. If performing a DIY installation, proceed with caution and consult a vehicle service manual for specific trim removal procedures.
Required Tools (Not Included):
- Socket wrench set
- Screwdriver set (Phillips and flathead)
- Plastic trim removal tools
Installation Steps:
- Safety First: Ensure the vehicle is turned off, the parking brake is engaged, and the battery is disconnected to prevent electrical shorts.
- Access Rear Light Assembly: Open the trunk and locate the access panels or trim covering the rear of the tail light assembly. Carefully remove these panels using appropriate trim removal tools.
- Disconnect Wiring: Locate the electrical connector attached to the existing tail light. Gently press the release tab and pull to disconnect the wiring harness.
- Remove Old Tail Light: Unscrew any retaining bolts or nuts holding the tail light in place. Carefully pull the old tail light assembly straight out from the vehicle body.
- Inspect Connector: Before installing the new tail light, visually inspect the vehicle's wiring connector to ensure it is clean and free from damage. The new tail light uses the original auto interface design.

Figure 5.1: Detail of the tail light's rear housing and electrical connector. Ensure this plug matches your vehicle's existing wiring.
- Install New Tail Light: Carefully position the new YWGMGJND tail light into the opening. Ensure all mounting tabs align correctly.
- Secure Tail Light: Reinstall the retaining bolts or nuts and tighten them securely, but do not overtighten.
- Connect Wiring: Reconnect the electrical wiring harness to the new tail light. Ensure it clicks firmly into place.
- Test Functionality: Reconnect the vehicle battery. Test all tail light functions: driving lights, brake lights, turn signals, and reversing lights, before reassembling the interior trim.
- Reassemble Trim: Once all functions are verified, reinstall any removed access panels and trim pieces.

Figure 5.2: Visual comparison of an older tail light design (top) versus the new YWGMGJND tail light (bottom) installed on an Audi A5, demonstrating the aesthetic upgrade.

Figure 5.3: Rear view of an Audi A5 with both YWGMGJND tail lights successfully installed, showcasing their integrated appearance.
6. Operation
The YWGMGJND Tail Lights operate in conjunction with your vehicle's existing electrical system. They are designed to provide enhanced visibility and safety through their various lighting functions:
- Driving Lights: Illuminate when your vehicle's headlights or parking lights are on, providing continuous rear illumination.
- Brake Lights: Activate when the brake pedal is pressed, signaling deceleration or stopping to following vehicles.
- Turn Signals: Flash to indicate a left or right turn, or lane change.
- Reversing Lights: Illuminate when the vehicle is shifted into reverse gear, providing light for backing up and signaling reverse movement.
The improved brightness and design of these lights significantly enhance your vehicle's visibility to other drivers, especially in adverse weather conditions such as rain, fog, or snow, thereby improving overall driving safety.

Figure 6.1: A single YWGMGJND tail light shown illuminated, demonstrating its bright and clear light output.
7. Maintenance
To ensure the longevity and optimal performance of your YWGMGJND Tail Lights, follow these simple maintenance guidelines:
- Regular Cleaning: Clean the outer lens with a soft cloth and mild automotive soap and water. Avoid abrasive cleaners or harsh chemicals that could damage the lens material.
- Inspect for Damage: Periodically check the tail light assemblies for any signs of cracks, moisture intrusion, or loose connections. Address any issues promptly.
- Wiring Inspection: Ensure the wiring harness remains securely connected and free from corrosion or damage.
8. Troubleshooting
If you encounter any issues with your YWGMGJND Tail Lights, consider the following troubleshooting steps:
- Light Not Functioning:
- Check the electrical connection at the back of the tail light to ensure it is securely plugged in.
- Inspect the vehicle's fuse box for any blown fuses related to the tail lights. Replace if necessary.
- Verify that the vehicle's battery is properly charged and connected.
- Intermittent Function:
- Ensure all wiring connections are tight and free from corrosion.
- Check for any loose mounting bolts that might affect the electrical ground.
- Moisture Inside Lens:
- Small amounts of condensation can occur due to temperature changes and usually dissipate.
- If significant water accumulation is present, check for cracks in the housing or improper sealing during installation. Re-seal or replace if necessary.
If these steps do not resolve the issue, it is recommended to consult a qualified automotive technician for diagnosis and repair.
9. Warranty and Support
For information regarding warranty coverage or technical support, please refer to the purchase documentation or contact YWGMGJND customer service directly through the retailer where the product was purchased. Please have your product model and purchase date available when contacting support.